cc: Rework how picture layer tiling set gets into raster queues.

cc/trees/layer_tree_host_impl.h

Index: cc/trees/layer_tree_host_impl.h
diff --git a/cc/trees/layer_tree_host_impl.h b/cc/trees/layer_tree_host_impl.h
index f4052f1fae136ba242f601b6ca310d48edde5bd6..7d5a8dff07b2fe1060a59cf9a823c2a7964792c5 100644
--- a/cc/trees/layer_tree_host_impl.h
+++ b/cc/trees/layer_tree_host_impl.h
@@ -247,16 +247,8 @@ class CC_EXPORT LayerTreeHostImpl
   void NotifyReadyToActivate() override;
   void NotifyReadyToDraw() override;
   void NotifyTileStateChanged(const Tile* tile) override;
-  scoped_ptr<RasterTilePriorityQueue> BuildRasterQueue(
-      TreePriority tree_priority,
-      RasterTilePriorityQueue::Type type) override;
-  scoped_ptr<EvictionTilePriorityQueue> BuildEvictionQueue(
-      TreePriority tree_priority) override;
   void SetIsLikelyToRequireADraw(bool is_likely_to_require_a_draw) override;
-
-  // Returns existing picture layers.
-  // TODO(vmpstr): Remove this, it's only used in tests.
-  const std::vector<PictureLayerImpl*>& GetPictureLayers() const;
+  bool PendingTreeExists() override;
 
   // ScrollbarAnimationControllerClient implementation.
   void PostDelayedScrollbarFade(const base::Closure& start_fade,
@@ -495,12 +487,6 @@ class CC_EXPORT LayerTreeHostImpl
   void InsertSwapPromiseMonitor(SwapPromiseMonitor* monitor);
   void RemoveSwapPromiseMonitor(SwapPromiseMonitor* monitor);
 
-  void RegisterPictureLayerImpl(PictureLayerImpl* layer);
-  void UnregisterPictureLayerImpl(PictureLayerImpl* layer);
-
-  void GetPictureLayerImplPairs(std::vector<PictureLayerImpl::Pair>* layers,
-                                bool need_valid_tile_priorities) const;
-
   void SetRequiresHighResToDraw() { requires_high_res_to_draw_ = true; }
   void ResetRequiresHighResToDraw() { requires_high_res_to_draw_ = false; }
   bool RequiresHighResToDraw() const { return requires_high_res_to_draw_; }
@@ -733,9 +719,6 @@ class CC_EXPORT LayerTreeHostImpl
 
   std::set<SwapPromiseMonitor*> swap_promise_monitor_;
 
-  std::vector<PictureLayerImpl*> picture_layers_;
-  std::vector<PictureLayerImpl::Pair> picture_layer_pairs_;
-
   bool requires_high_res_to_draw_;
   bool is_likely_to_require_a_draw_;